android PopupWindow 新增下拉展開動畫效果
阿新 • • 發佈:2019-02-13
1.兩個動畫,包括show 和hide
show:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:fillAfter="true"
android:fillEnabled="true" >
<scale
android:duration="200"
android:fromXScale="1.0"
android:fromYScale ="0.0"
android:interpolator="@android:anim/accelerate_decelerate_interpolator"
android:pivotX="50%"
android:pivotY="0%"
android:toXScale="1.0"
android:toYScale="1.0" >
</scale>
<alpha
android:duration="180"
android:fromAlpha="0.0"
android:toAlpha="1.0" />
</set>
hide:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:fillEnabled="true"
android:fillAfter="true">
<scale
android:duration="200"
android:fromXScale ="1.0"
android:fromYScale="1.0"
android:interpolator="@android:anim/accelerate_interpolator"
android:pivotX="50%"
android:pivotY="0%"
android:toXScale="1.0"
android:toYScale="0.0" >
</scale>
<alpha
android:duration="180"
android:fromAlpha="1.0"
android:toAlpha="0.0" />
</set>
2.新增動畫樣式:
<style name="popmenu_animation" parent="android:Animation">
<item name="android:windowEnterAnimation">@anim/popumenu_animation_show</item>
<item name="android:windowExitAnimation">@anim/popumenu_animation_hide</item>
</style>
3.新增動畫
PopupWindow.setAnimationStyle(R.style.popmenu_animation);